Neural control of cardiovascular function — Flashcards

Flashcard 1: The adrenal medulla is the main physiologic source of _____

Answer: catecholamines (epinephrine, norepinephrine)

Flashcard 2: Which cranial nerve monitors the aortic body and arch chemo- and baroreceptors? _____

Answer: Vagus nerve (CN X)

Flashcard 3: What change in heart rate is expected during the valsalva maneuver if the patient's baroreceptor reflex is intact?_____

Answer: Increased HR

Flashcard 4: Which catecholamine binds to $\alpha_1, \alpha_2, \beta_1$, and $\beta_2$ receptors?

Answer: Epinephrine

Extra: Epinephrine is released by the adrenal medulla, which consists of modified post-ganglionic sympathetic neurons. Unlike norepinephrine, epinephrine has significant activity at $\beta_2$ receptors in addition to $\alpha_1, \alpha_2,$ and $\beta_1$ receptors.

Flashcard 5: The anterior hypothalamus controls the _____ nervous system

Answer: parasympathetic

Flashcard 6: What is the clinical significance of watershed zones in cerebral circulation?

Answer: areas at the border of two artery distributions are prone to hypoxia and infarction during severe hypotension

Flashcard 7: Which basal ganglia pathway inhibits movement?

Answer: indirect mnemonic: indirect inhibits

Flashcard 8: What is the phrase used to describe action potential conduction in myelinated nerves?

Answer: saltatory conduction i.e. AP basically jumps from node to node

Flashcard 9: What is the function of myelin?

Answer: increases neuronal conduction velocity

Flashcard 10: Give the stages of mitosis.

Answer: prophase, metaphase, anaphase, telophase mnemonic: PMAT